HollyFrontier Corporation Fourth Quarter 2012 Earnings Release and Conference Webcast  

  HollyFrontier Corporation Fourth Quarter 2012 Earnings Release and
  Conference Webcast

Business Wire

DALLAS -- January 18, 2013

HollyFrontier Corporation (NYSE: HFC) plans to announce results for its
quarter ended December 31, 2012 on February 26, 2013, before the opening of
trading on the NYSE. The company has scheduled a webcast conference on
February 26, 2013 at 11:00 a.m. Eastern time to discuss financial results.

This webcast may be accessed at:
https://event.webcasts.com/starthere.jsp?ei=1012528.

An audio archive of this webcast will be available using the above noted link
through March 12, 2013.

HollyFrontier Corporation, headquartered in Dallas, Texas, is an independent
petroleum refiner and marketer that produces high value light products such as
gasoline, diesel fuel, jet fuel and other specialty products. HollyFrontier
operates through its subsidiaries a 135,000 barrels per stream day ("bpsd")
refinery located in El Dorado, Kansas, a 125,000 bpsd refinery in Tulsa,
Oklahoma, a 100,000 bpsd refinery located in Artesia, New Mexico, a 52,000
bpsd refinery located in Cheyenne, Wyoming and a 31,000 bpsd refinery in Woods
Cross, Utah. HollyFrontier markets its refined products principally in the
Southwest U.S., the Rocky Mountains extending into the Pacific Northwest and
in other neighboring Plains states. A subsidiary of HollyFrontier also
currently owns a 44% interest (including a 2% general partner interest) in
Holly Energy Partners, L.P.

Information about the Company may be found on its website at
www.hollyfrontier.com.

Contact:

HollyFrontier Corporation
Julia Heidenreich, 214-954-6510
Investor Relations